blur the current browser window???????????

[nirmalsingh]

i am having 2 html pages.
1.main.html
2.sub.html

if i click a button in main.html, sub.html will be opened like popup window.
now my problem is,
i want to change the color or blur or differentiate the main.html from sub.html at when sub.html is opened.
what should i do??

[acoder]

Just give focus to sub.html.

[nirmalsingh]

any other way to show it little more contrast??

[acoder]

That is OS-specific. In any case, when a browser window has focus, it is pretty obvious to the user which is which. If you have sub.html smaller than main, that makes it even more obvious.